Portable hand-punch



(No Model.)

G. E. NUEBLING.

PORTABLE HAND PUNCH.

No. 340,727. Patented Apr. 27, 1886.

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UNITED STATES PATENT OFFICEO GEORGE E. NUEBLING, OF READING,PENNSYLVANIA.

PORTABLE HAND-PUNCH.

SPECIFICATION forming part of Letters Patent No. 340,727, dated April27, 1886.

Application filed February 11, 1886. Serial No. 191,566. (No model.)

all whom' it may concern Be it known that I, GEORGE E. NUEBLING, acitizen of the United States, residing at the city of Reading, county ofBerks, State of Pennsylvania, have invented anew and useful Improvementin Portable HandPunches, of which the following is a specification.

This improvement relates more particularly to the class of portablepunches used in the construction of boiler-tanks, 8:0.

The object of the improvementis tofurnish boiler-makers and metal-workers generally with a handpunch not liable to get out of order,having the working parts concealed, and free from liability to dirt anddamage, and all parts easily and cheaply replaced,with the excessivefriction of the ordinary screwpunch eliminated by tranferring thepressure to a bed of anti-friction rollers.

Referring to the drawings accompanying this specification and forming apart of the same, and in which similar letters of reference designatesimilar parts, Figure 1 represents the frame of the punch in sideelevation with the front portion of the same in section, showing thearrangement of the working parts. Fig. 2 represents in plan theanti-friction-roller bed and rollers for receiving the thrust of thepunch.

In exterior appearance my improved punch does not differ materially inform of frame,

- jaws, and head from the punches usually found in boiler-shops; but acloser examination reveals the fact that its construction is a decidedadvance in the hand-punch line.

The construction is as follows: The frame A is provided with the usualjaw,A, anda head, A, a triflelargerin its diameter than the usual directscrew-threaded head, which is bored to receive the spindle O, and has athreaded counterbore, A at its upper end, a recessed seat, A*, in thelower jaw for the die, anda tapered bore, A beneath the same. The cap Bhas a threaded extension, B, to connect with the frame at A is bored atB for the neck of the punching-screw, and counterbored at B to form abed adapted to receive the anti'friction rollers F; The spindle G isfitted to the bore of the head A and is counterbored from its upper endto form a seat, 0, to support the renewable nut D, and from its outerend to form a seat, 0 for the head H of the punch. The renewable nut Dis turned to fit the bore of the spindle O with a very slight play, itscollar D fitted to an accurate bearing upon the end of the spindle, andits lower end, D", to a coincident bearing upon the seat 0, the interiorthreaded to fit the punchingscrew E, and the spindle C and nut D held inmutual connection with the screw E by a removable pin, D as shown. Toprevent the turning of the spindle and revolution of the punch,aguide-spline,A, is formed in the bore of the head just beneath the capB, of alength to admit of the full travel of the punch, and afeather-key, or its equivalent, D, is secured in the upper end of thespindle at G which, as the punch H is raised or lowered by therevolution of the screw E, travels in said spline and restrains thespindle, nut, and punch from a circular movement. The punching oroperating screw E, which is threaded to fit the nut D, is formed with astrong collar, E, with a neck, E projected above the same, which isthreaded at E", for connection with the threaded counterbore G of itsremovable head G, being additionally secured therewith by a pin, G Thecollar E is fitted to the bore of the cap B, and its upper face, E isturned to form a bed for the anti-friction rollers F, which are made ofsuch diameter and length asjust to fill out the space left between thecollar and cap and the neck of the screw and bore of the cap, as shown.

As constructed a small space is left between the nut and collar when thespindle is drawn up within the bore. This forms a reservoir, which willbe filled with oil, and as the screw is operated will lubricate themoving parts. The punch 11 is secured in the usual manner to the spindleby a sunk tap-screw, H.

The operation of the punch is as follows: The screw is operated to raisethe nut and to retract the spindle and punch. The plate is then laidupon the die, and the movement of 5 IOO ate the same. I prefer to formthe screw with its collar and the cap, together with the antifrictionrollers,of steel or some equivalent metal.

Having shown the construction, use, and advantages of my improvedhandpunchfl desire to claim as follows:

1. The combination, with the frame A and head A of a portablehand-punch, of a nonrevoluble spindle, O, having a counterbore at itsinner end forming a seat, 0, for a removable nut, D, a oounterbore atits outer end forming a seat, 0 for the head of the punch, and afeather-key or its equivalent, 0 moving in a spline, A, adapted thereto,said nut D removably secured to the spindle O by a pin, D substantiallyas shown, described, and for the purpose set forth.

2. In combination with a 11011 revoluble spindle and nut of ahand-punch, its head and frame, as shown and described, a screw spindle,E, having a collar, E, fitted to revolve in the cap B, a beveled upperface or seat, E neck E, and removable head G, cap B, threaded extension13, counterbore-seat 13", adapted by bore B to the neck of the screw,with a series of anti friction rollers, F, surrounding the neck E andheld between the cap-seat B and collarseat E, substantially as and forthe purpose specified. v

3. In a portable hand-punch, the combination, essentially, of thefollowing elements: a frame, A, havingjaws A, head A threadedeounterbore A", die-seat A, tapered aperture A spline A, with capB,threaded to fit counterbore A adapted to the neck of thescrew-spindle, and having a seat or bed for the anti-friction rollers Fformed in the same, the top forming a seat for the operating-head G, anon-revoluble spindle having a removable nut, D, therein, andfeather-key O reservoir J,punch H, and die I, all arranged, combined,and adapted to be operatedin the manner and for the purpose set forth.

GEORGE E. NUEBLING. WVitnesses:

JAMES R. KENNEY, J. H. J AOOBS.

